Optimized INA Profile
The new outer ring outside surface – the optimized INA profile – leads to reduced Hertzian pressure between the outer ring and mating track compared to conventional profiles.
The reduction in the Hertzian pressure reduces the load on the mating track, as shown here for the material GGG-50. Tests schow that this reduction has a pominent influence on the wear of the mating track.
|y: Wear [g] after 360 000 overrolling cycles|
x: Radial load [kN]
y: Mean running time [%]
Depending on the load, the new profile has a positive influence on the fatigue life of the mating track, as shown here for the material 42 CrMo4V. This leads to significantly longer mating track life or, alternatively the option of using more economical mateials.
The optimized INA profile reduces the Hertzian pressure in the contact zone. This gives decisive user benefits